AQA Core Physics | Energy Transfer by Heating

-Radio waves, microwaves, infared radiation and visible light are parts of the electromagenetic spectrum. Electromagnetc waves are electric and magnet waves that travel through space and transfer infared radiation.

-The sun emits all kinds of electromagnetic radiation, most of which is blocked by the earths atmosphere, but not infared radiation.

-The earths atmosphere acts like a greenhouse, allowing short wavelength infared radiation and light from the sun to enter the atmosphere, but not allowing it back out, as objects emit infared radiation of longer wavelengths.

-The earth is becoming too warm because of all the gas and heat trapped inside.